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Atomic Structure of Europium and Erbium


Atomic Structure of Erbium and Europium


Atomic Properties

Atomic Number
63   
99+
68   
99+

Electron Configuration
[Xe] 4f7 6s2   
[Xe] 4f12 6s2   

Crystal Structure
Body Centered Cubic (BCC)   
Hexagonal Close Packed (HCP)   

Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
HCP-Crystal-Structure-of-Erbium.jpg#100   

Atom
  
  

Number of Protons
63   
99+
68   
99+

Number of Neutrons
89   
38
99   
33

Number of Electrons
63   
99+
68   
99+

Radius of an Atom
  
  

Atomic Radius
180.00 pm   
14
176.00 pm   
18

Covalent Radius
198.00 pm   
13
189.00 pm   
19

Van der Waals Radius
233.00 pm   
18
Not Available   

Atomic Weight
151.96 amu   
99+
167.26 amu   
99+

Atomic Volume
28.90 cm3/mol   
8
18.40 cm3/mol   
25

Adjacent Atomic Numbers
  
  

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Holmium
  

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Gadolinium
  
Thulium
  

Valence Electron Potential
45.60 (-eV)   
35
49.00 (-eV)   
29

Lattice Constant
458.10 pm   
17
355.88 pm   
39

Lattice Angles
π/2, π/2, π/2   
π/2, π/2, 2 π/3   

Lattice C/A Ratio
Not Available   
1.57   
17

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